A Compact Frequency-Reconfigurable Antenna With Independent Tuning for Hand-Held Wireless Devices

Subbaraj, Sangeetha; Kanagasabai, Malathi; Alsath, M. Gulam Nabi; Palaniswamy, Sandeep Kumar; Kingsly, Saffrine; Kulandhaisamy, Indhumathi; Shrivastav, A. K.; Natarajan, Rajesh; Meiyalagan, Shanmugapriya

doi:10.1109/tap.2019.2938668

Cited by 31 publications

(20 citation statements)

References 11 publications

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“…FR antennas can dynamically switch the operating bands to other frequency bands to avoid spectrum congestion and address the issues of spectrum resources scarcity. Various types of FR antennas are reported in literature including monopole, 3‐5 dipole, 6,7 bow‐tie, 8,9 patch, 10,11 printed inverted F‐Antenna (PIFA), 11 and slot 12‐15 antennas with different characteristics. Slot‐based radiating structures are quite popular because they are easy to fabricate and have compact planar structure with ease of integration with other circuit components.…”

Section: Introductionmentioning

confidence: 99%

Frequency agile multiple‐input‐multiple‐output antenna design for 5G dynamic spectrum sharing in cognitive radio networks

Hussain

Khan

Iqbal

et al. 2020

Micro & Optical Tech Letters

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In this work, 2‐element slot‐based frequency reconfigurable (FR) multiple‐input‐multiple‐output (MIMO) antenna design antenna with a very wide‐sweep is proposed for dynamic spectrum sharing (DSS) in 5G technologies. FR is achieved using varactor diode with frequency tuning range from 1655 to 2605 MHz. The design is a low profile with planar structure having a single element footprint of 19.5 × 20 mm2. The two slot antenna elements of the MIMO configuration are etched out from a ground (GND) plane of dimensions of 60 × 120 mm2. The proposed antenna is narrow‐band and hence it is suitable for RF front‐end in the 5G‐enabled DSS in cognitive radio (CR) applications.

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Section: Introductionmentioning

confidence: 99%

Frequency agile multiple‐input‐multiple‐output antenna design for 5G dynamic spectrum sharing in cognitive radio networks

Hussain

Khan

Iqbal

et al. 2020

Micro & Optical Tech Letters

View full text Add to dashboard Cite

show abstract

“…Various types of antenna designs were reported in the literature with continuous frequency sweep including dipoles [3–5], monopoles [6–8] and patch [9,10] antenna designs. Various slot‐based antenna designs have been reported in the literature with continuous frequency and multi‐band operation [11–20]. However, slot based antenna design is preferable because of the numerous advantages it offer.…”

Section: Introductionmentioning

confidence: 99%

Dual‐band‐independent tunable multiple‐input–multiple‐output antenna for 4G/5G new radio access network applications

Hussain

2021

IET Microwaves Antenna & Prop

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Slot‐based dual‐band, low‐profile frequency reconfigurable (FR) multiple‐input–multiple‐output (MIMO) antenna design is presented here. Each element is composed of concentric annular slots that are loaded reactively using varactor diodes. Accurate placement of diodes and optimal biasing circuit configuration result in complete control on each of the tuned bands. The unique feature of the proposed work is the independent as well as concurrent tuning of each band over a wide frequency range from 1.7 to 3.8 GHz. Moreover, the competitive advantage of independent tuning and its narrow‐band (NB) operation may result in better power management for RF front‐end devices. The proposed antenna is fabricated using an RO‐4350 substrate with board dimensions 60 × 120 × 0.76 mm3. The proposed dual‐band compact antenna design is suitable to be utilized in the current fourth generation (4G) wireless standards as well as for upcoming fifth generation (5G) new radio access networks (RANs) with sub 6‐GHz operation.

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“…Recently, the frequency reconfigurable antennas in various topologies of slotline with branch edge [5], composite right/left hand (CRLH) transmission line [6], [7], geometrical slots excited by feed line [8], [9], bow-tie microstrip [10], [11], Quasi-Yagi dipole [12], [13], wideband/dual-band microstrip patch [14]- [16], half annular ring slot [17], metamaterial inspired [18], and tunable slot [19], are proposed. In addition to this, frequency reconfigurable antennas with different radiating structures such as U-shaped slot [20], rectangular loops with partial patch [21], circular patch [22], monopole configuration [23], quadrifilar helix [24], loop antenna with independent tuning [25], grounded asymmetric CPW fed planar [26], U-shaped monopole radiator [27], and substrate integrated waveguide based reconfigurable antenna [28] are reported. In the antennas mentioned above, a PIN diode/varactor diode is inserted on the specified slots for the effective controlling of frequency bands because they possess low threshold voltage and flexible mounting configuration.…”

Section: Introductionmentioning

confidence: 99%

An Autonomous Frequency Reconfigurable Antenna Using Slotline Open-Loop Resonators

2021

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This paper presents a slotline open-loop resonators based frequency reconfigurable antenna with autonomous switching of frequency bands. The dual-port slot antenna is designed to operate at 2.1 GHz when excited at port-1, and when port-2 is excited, the antenna can be reconfigured to operate at 2.85 GHz and 5.52 GHz, respectively. Port-1 is used to receive the control signal, which is converted to a DC signal using a rectifier. The rectified control signal is used to switch the operating frequency bands of the port-2. The proposed antenna configuration gives the flexibility of remote/wireless control of the operating frequency. The antenna prototype is fabricated and measured for observing the frequency switching at port-2. The measured results show that the antenna has been effectively switched from lower band frequency (2.8 GHz) to upper band frequency (5.41 GHz) when the PIN diode is ON. The proposed antenna in its final configuration can be potentially suitable for transmitter reconfigurable antenna without the need for external DC bias voltage.

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A Compact Frequency-Reconfigurable Antenna With Independent Tuning for Hand-Held Wireless Devices

Cited by 31 publications

References 11 publications

Frequency agile multiple‐input‐multiple‐output antenna design for 5G dynamic spectrum sharing in cognitive radio networks

Frequency agile multiple‐input‐multiple‐output antenna design for 5G dynamic spectrum sharing in cognitive radio networks

Dual‐band‐independent tunable multiple‐input–multiple‐output antenna for 4G/5G new radio access network applications

An Autonomous Frequency Reconfigurable Antenna Using Slotline Open-Loop Resonators

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